The Ministry of Time by Kaliane Bradley
What happens if the government figures out how to bring to the present a handful of figures from centuries ago? For one, they'll need handlers to help them adapt to their new world. This novel follows one such pairing through the pitfalls of modernity, inter-century espionage, speculative time-travel, and romantic entanglement. It’s funny, heartbreaking, utterly unique, and captivating.